Space-Time Reference Systems for Monitoring Global Change and for Precise Navigation in Space

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The main objective of this coordinated project is to develop integrative methods and procedures for a consistent definition and realisation of reference systems on Earth and in space. In an environment of ever increasing observing capabilities as well as of social and scientific needs, a framework of reference systems will be produced which are linked consistently with an appropriate level of accuracy to guarantee a solid basis for measuring geometric effects of Global Change and for high-precision navigation near Earth and in deep space. The contributions of various groups active in geodetic, astronomical and space sciences will enable a comprehensive interdisciplinary treatment of reference systems. As a final result, a consistent set of reference systems for the Earth, artificial satellites, the Moon, selected planets and for the far-distant compact radio galaxies will be realised with unprecedented accuracy.